Briggs & Stratton Diaphragm Kit 5021K This Kit Replaces Briggs & Stratton service part #272538 (diaphragm) and #692206 (spring), and #690766 (spring cap) For 2 through 5 Horsepower Engines with a Horizontal Crankshaft Do it yourself, diaphragm replacement kit Genuine Briggs & Stratton Part